
Steel pipes are generally divided into seamless steel pipes and welded steel pipes according to production methods. This time we mainly introduce welded steel pipes, that is, seam steel pipes. The production of pipe billets (steel plates and steel strips) is bent and rolled into the required cross section by various forming methods. The pipe tube with surface shape and size is then welded by different welding methods to obtain steel pipes. Compared with seamless steel pipe welded pipes, it has high product accuracy, especially high wall thickness accuracy, simple main equipment, and small floor space. Continuous operation in production and flexible production characteristics, welded pipes should be divided from the production process, and divided into three types: spiral submerged arc welded pipe(SSAW), straight seam double-sided submerged arc welded pipe(LSAW) , and electric resistance welded pipe(ERW pipe).
1. The production process of spiral steel pipe is roughly as follows:
The raw materials of spiral steel pipe are strip coil, welding wire and flux. Before forming, the strip undergoes leveling, edge trimming, edge planing, surface cleaning and conveying and pre-flanging treatment. The weld gap control device is used to ensure that the weld gap meets the welding requirements. It is required to strictly control the pipe diameter, the amount of misalignment and the gap between the welds. After cutting into a single steel pipe, the first three of each batch of steel pipes must undergo a strict initial inspection system to check the mechanical properties, chemical composition, fusion state and surface of the weld. Quality and non-destructive inspections to ensure that the pipe-making process is qualified can it be officially put into production.
2. LSAW steel pipe:
Generally speaking, LSAW steel pipe is made of steel plate as raw material. After different forming processes, double-sided submerged arc welding and post-weld diameter expansion are adopted to form welded pipe. The forming method of LSAW pipe is UO (UOE). , RB (RBE), JCO (JCOE), etc.
UOE LSAW pipe forming process:
UOE LSAW steel pipe forming process mainly has three forming processes: steel plate pre-bending, U forming and O forming. Each process uses a special forming press to complete the edge pre-bending, U forming and O forming of the steel plate in sequence. Three processes, the steel plate is deformed into a round tube, the JCOE LSAW pipe forming process: After multiple stamping on the JC0 forming machine, first half of the steel plate is pressed into a J shape, and then the other half of the steel plate is pressed into a J Shape, forming a C-shape, press from the middle to form an open "O"-shaped tube.
Comparison of JCO and UO molding methods:
JCO forming is progressive pressure forming, which changes the forming process of steel pipe from two steps of UO forming to multiple steps. During the forming process, the steel plate deforms evenly, the residual stress is small, and the surface does not produce scratches. There is greater flexibility in the size range of the wall thickness, which can produce both large-volume products and small-volume products. It can produce large-diameter high-strength thick-walled steel pipes and small-diameter large-walled steel pipes, especially In the production of high-quality thick-walled pipes, especially small and medium-caliber thick-walled pipes, it has advantages that other processes can’t match, and can meet more requirements of users for steel pipe specifications. UO forming adopts U and O double pressure forming. Its characteristics are It has large capacity and high output. Generally, the annual output can reach 300 to 1 million tons, which is suitable for mass production of a single specification.
3. Straight seam high frequency welded pipe
Straight seam high-frequency welded pipe (ERW) is formed by forming a hot-rolled coil through a forming machine, using the skin effect and proximity effect of high-frequency current to heat and melt the edge of the pipe blank, and pressure welding is performed under the action of a squeeze roller. , The above introduces you to the relevant content of the three processes of welded pipes, and I hope that the above content will be helpful to you.
Article source: https://article-realm.com/article/Finance/11738-Three-Production-Processes-of-Welded-Pipe.html
Reviews
Comments
Most Recent Articles
- Jan 28, 2025 Adapting to change: Key challenges facing UK professional services firms by Sakkun Tickoo
- Jan 22, 2025 The evolution of integrated payments: where digital advancements converge with open banking by Sakkun Tickoo
- Jan 20, 2025 Centralized Exchange Development Company - To Build a Seamless Trading Experience by AaronMG
- Jan 20, 2025 Accounting Services: Simplifying Business Finances by Mila james
- Jan 10, 2025 Why MFDs Need Mutual Fund Software in India to Scale their Business? by Wealth Elite
Most Viewed Articles
- 19070 hits How to Download and Install Facebook Messenger on Firestick by Hope Mikaelson
- 11668 hits How to Start an Invention Idea by Edwin Poul
- 2809 hits Brief discussion about Water by kavin prasath
- 2451 hits Sleeping Pillow Market by Trisha Kumari
- 2413 hits How to use wholesale styrofoam Mannequin Head practice portrait lighting? by Liu Yudi
Popular Articles
In today’s competitive world, one must be knowledgeable about the latest online business that works effectively through seo services....
77886 Views
Are you caught in between seo companies introduced by a friend, researched by you, or advertised by a particular site? If that is...
33590 Views

Facebook, the best and most used social app in the world, has all the social features you need. However, one feature is missing. You cannot chat...
19070 Views

Walmart is being sued by a customer alleging racial discrimination. The customer who has filed a lawsuit against the retailer claims that it...
14913 Views
If you have an idea for a new product, you can start by performing a patent search. This will help you decide whether your idea could become the...
11668 Views
Statistics
Members | |
---|---|
Members: | 16307 |
Publishing | |
---|---|
Articles: | 66,152 |
Categories: | 202 |
Online | |
---|---|
Active Users: | 1079 |
Members: | 12 |
Guests: | 1067 |
Bots: | 5808 |
Visits last 24h (live): | 2916 |
Visits last 24h (bots): | 16751 |